Lone yokozuna Terunofuji remained unbeaten Thursday at the Summer Grand Sumo Tournament, but sole ozeki Takakeisho suffered his second upset loss on Day 5 at Tokyo's Ryogoku Kokugikan.For the second day in a row, the Mongolian-born grand champion saw off his opponent with an arm barring force out, this time pinning the arms of No. 4 maegashira Ura (3-2) and lifting him outside the ring.Seven-time Emperor's Cup winner Terunofuji has so far dispelled concerns about his health at the 15-day meet, having undergone surgery on both knees last October and missing the last four tournaments either e…READ FULL ARTICLE